20 points and branlyist. PLZ HELP. How does the mutation that results in lactose tolerance affect people? decreases the likelihood of bacterial infections
increases the likelihood of bacterial infections
prevents the breaking down of sugars in milk
helps break down sugars in milk

Some individuals have inherited changes in this element that lead to sustained lactase production in the small intestine and the ability to digest lactose throughout life. People without these changes have a reduced ability to digest lactose as they get older, resulting in the signs and symptoms of lactose intolerance.

Explanation:

a chair, a bed, and a toothbrush

explanation:

i was told this before by a teacher, so yeah

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.